Which of the following is the variation of acceleration due to gravity at a depth d below the earth s surface? Let R be the radius of the earth and M1 the mass of earth. (Assume the density of the earth to be constant)

Which of the following is the variation of acceleration due to gravity

1.	Which of the following is the variation of acceleration due to gravity at a depth d below the earth s surface? Let R be the radius of the earth and M1 the mass of earth. (Assume the density of the earth to be constant)
A.	g = (G*M1)/(R d)
B.	g = [(G*M1) x density]/d
C.	g = (G x M1/R<sup>3</sup>) / (R d)
D.	g = (G x M1/R<sup>3</sup>) x (R d)
Answer» E.

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